from datetime import datetime, date
from decimal import Decimal
from enum import Enum


class SerializationUtil(object):
    @staticmethod
    def object_to_dict(obj):
        return SerializationUtil._dump(obj)

    @staticmethod
    def _dump(obj):

        if isinstance(obj, str) or isinstance(obj, complex):
            return str(obj)

        if isinstance(obj, (int, float, bool)):
            return obj

        if obj is None:
            return None

        # elif isinstance(obj, bytes):
        #     return string_util.bytes_to_str(obj)

        elif isinstance(obj, Decimal):
            return float(str(obj))

        elif isinstance(obj, Enum):
            return obj.value

        elif isinstance(obj, datetime):
            return str(obj)
            # return datetime_util.get_epoch_from_datetime(obj)

        elif isinstance(obj, date):
            return str(obj)
            # return datetime_util.get_epoch_from_date(obj)

        elif isinstance(obj, (set, list, tuple)):
            _list = []
            for item in obj:
                _list.append(SerializationUtil._dump(item))
            return _list

        elif isinstance(obj, dict):
            _dict = {}
            for key in obj:
                key_str = SerializationUtil._dump(key)
                _dict[key_str] = SerializationUtil._dump(obj[key])
            return _dict

        else:
            _dict = {}
            if hasattr(obj, '__dict__'):
                for key in obj.__dict__:
                    _dict[key] = SerializationUtil._dump(obj.__dict__[key])
            return _dict